Rendering

It will choose the first one that is discovered, without regards to the type of
rendering (erb, haml, slim). Otherwise you can explicitly specify the type of
rendering of your choice (erb, haml, slim).

When you visit the :show route with I18n.locale == :ru enabled, Padrino will
first try to look for "admin/show.ru.js." if nothing matches that criteria, it
will try "admin/show.ru." then "admin/show.js.*". As a last resort, if he finds
nothing matching your criteria, it will return "admin/show.erb" (or
admin/show.haml)